Anti-cracking and anti-seepage structure of long and large-size concrete underground structure and construction method thereof

Abstract

The invention discloses an anti-cracking and anti-seepage structure of a long and large-size concrete underground structure and a construction method of the anti-cracking and anti-seepage structure, and belongs to the field of concrete construction.The anti-cracking and anti-seepage structure comprises a reinforced concrete precast block, a male head and a female head, and the male head and the female head are arranged on the connecting face of the reinforced concrete precast block; the female head comprises an inserting hole formed in the reinforced concrete precast block, a plurality of radial telescopic heads are evenly arranged on the inner wall of the inserting hole in an annular array mode, the conical inserting head stretches into the inserting hole through the radial telescopic heads, and the conical inserting head is clamped into the space defined by the radial telescopic heads and the inserting hole. According to the anti-cracking and anti-seepage structure of the large and large-size concrete underground structure and the construction method of the anti-cracking and anti-seepage structure, the reinforced concrete prefabricated structure with the male head and the female head is adopted, concrete quality control under the controllable external environment is achieved, and therefore the influence of the external environment on the concrete structure is effectively avoided.

Description

Technical Field

[0001] The invention relates to the field of concrete construction, and in particular to a long and large volume concrete underground structure anti-cracking and anti-seepage structure and a construction method thereof. Background Art

[0002] In the construction of large and large concrete, cracks are formed because the concrete is subjected to external or internal forces during consolidation and hardening, which leads to changes in the internal stress state of the concrete, resulting in visible or invisible three-dimensional cracks. The following are the main reasons for the formation:

[0003] 1. Concrete shrinkage and deformation: Due to its large volume, the time and process of hydration reaction of large concrete is longer than that of ordinary concrete, so the time for the water inside the concrete to evaporate is also longer, which causes shrinkage and deformation. At the same time, the evaporation of water in the concrete will also lead to the formation of holes and pores inside the concrete, and the subsequent extrusion will aggravate the formation of cracks inside the concrete.

[0004] 2. Temperature change: During the construction of concrete structures, due to changes in ambient temperature, there is a large temperature difference between the inside and outside of the concrete, resulting in uneven temperature changes in the concrete, which in turn causes thermal stress inside the concrete and accelerates the formation of cracks. Especially in the low temperature climate of winter, ice in the gaps of replacement or panel splicing will also catalyze the cracking, load and deformation of the concrete structure.

[0005] 3. During the operation of concrete structures, due to load deformation and other instantaneous forces, the stress inside the concrete structure will be too large, causing cracks on the concrete surface.

[0006] It can be seen that in the construction of large and large concrete, the formation of cracks is an important and complex problem, which has a very important impact on engineering construction, safe operation and engineering quality. In order to solve the above problems, the existing technology adopts the following measures: adding reinforcing materials, using prestressing technology, adjusting the water-cement ratio and mix ratio of concrete, etc. to control cracks. It can be seen that the above measures need to be strictly controlled during the construction process and are greatly affected by the external environment, and the construction quality is uncontrollable. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a long and large-volume concrete underground structure anti-cracking and anti-seepage structure and a construction method thereof. By adopting a reinforced concrete prefabricated structure with male and female heads, concrete quality control is achieved under a controllable external environment, thereby effectively avoiding the impact of the external environment on the concrete structure.

[0008] To achieve the above-mentioned objectives, the present invention provides a long and large volume concrete underground structure anti-cracking and anti-seepage structure, comprising a reinforced concrete prefabricated block and a male head and a female head arranged on the connection surface of the reinforced concrete prefabricated block, the male head comprising a conical plug fixedly connected to the steel bars of the reinforced concrete prefabricated block, the female head comprising a socket opened on the reinforced concrete prefabricated block, a plurality of radial expansion heads evenly arranged in a circular array on the inner wall of the socket, the conical plug extending into the socket through the radial expansion head, and the conical plug being stuck in the space enclosed by the radial expansion head and the socket.

[0009] Preferably, the radial expansion head comprises an inner cylinder with one end fixed on the inner wall of the socket, an outer cylinder radially slidably arranged at the other end of the inner cylinder and a clamp, the clamp and the socket are connected via a return spring, and the return spring is placed inside the inner cylinder and the outer cylinder;

[0010] The clamping heads of multiple radial telescopic heads form an inner cone structure, the large end of the inner cone structure faces the direction of the tapered plug, the minimum inner diameter of the small end of the inner cone structure is smaller than the bottom diameter of the tapered plug, and the maximum inner diameter of the small end of the inner cone structure is larger than the bottom diameter of the tapered plug.

[0011] Preferably, a metal protective sleeve is fixed on the inner wall of the socket, the metal protective sleeve is welded to the steel bars in the reinforced concrete prefabricated block, and an inner cylinder is fixed on the inner wall of the metal protective sleeve.

[0012] Preferably, an insertion opening is provided at one end of the metal protective sleeve facing the conical plug, and an elastic rubber plug is provided inside the insertion opening.

[0013] Preferably, an elastic buffer layer is provided between the metal protective sleeve and the concrete of the reinforced concrete prefabricated block, and between the steel bars and the concrete of the reinforced concrete prefabricated block.

[0014] Preferably, the elastic buffer layer is made of polytetrafluoroethylene.

[0015] Preferably, the reinforced concrete prefabricated block is a structure formed by pouring concrete raw materials into a mold under set temperature conditions, and the raw materials include cement, fly ash, coarse aggregate, fine aggregate and additives, wherein the cement is silicate cement; the fly ash is Class I fly ash; the coarse aggregate is crushed stone with a particle size of 5-30 mm, and the mud content of the crushed stone is less than 1%; the fine aggregate is medium sand with an average particle size of 0.5 mm, the fineness modulus of the medium sand is greater than 2.3, and the mud content of the medium sand is less than 3%; the additive is a water reducer;

[0016] The weight ratio of cement, water, fly ash, coarse aggregate, fine aggregate and additives is 1:0.55:0.32:3.54:2.9:0.02.

[0017] Preferably, the water consumption of concrete is not more than 170kg / m 3The fly ash content shall not exceed 50% of the cementitious material usage, the water-cement ratio shall not exceed 0.45, and the sand rate shall be 38%-45%.

[0018] Preferably, the set temperature condition is that the difference between the ambient temperature and the concrete surface temperature and the concrete internal temperature is less than 5°C.

[0019] A construction method for a long and large volume concrete underground structure anti-cracking and anti-seepage structure comprises the following steps:

[0020] S1. Preparation of reinforced concrete prefabricated blocks:

[0021] S11. Ratio of concrete raw materials:

[0022] Cement, water, fly ash, coarse aggregate, fine aggregate and additives are weighed respectively according to a weight ratio of 1:0.55:0.32:3.54:2.9:0.02, and put into a mixer truck for mixing to obtain concrete raw materials;

[0023] S12, welding a metal protective sleeve or male connector with a radial expansion joint to the end of the steel bar at the connection surface;

[0024] S13, wrapping an elastic buffer layer around the outside of the metal protective sleeve and the outside of the steel bar, and heat-sealing the joints of the elastic buffer layer;

[0025] S14. Design the mold according to the design drawings and determine the position of the connection surface and the spacing and height of the steel bars, and arrange the steel bars inside the mold according to the design drawings;

[0026] S15, under the set temperature condition, pour the concrete raw materials that have been proportioned in step S11 into the mold, and after the mold is filled, expel the bubbles under the action of the vibrator;

[0027] S16, curing: after spraying water on the surface of the component obtained in step S15, cover it with a waterproof film, and place it under a set temperature condition for curing for a set time, wherein the set temperature is that the difference between the surface of the component and the ambient temperature is less than 20°C, and the center temperature of the component and the surface temperature are not greater than 25°C, and the set time is not less than 14 days;

[0028] S17. After the curing is completed, the waterproof film is removed from the mold for later use;

[0029] S2, excavation of foundation pit;

[0030] S3. Transport the reinforced concrete prefabricated blocks to the construction site, use hoisting equipment to hoist the reinforced concrete prefabricated blocks into the foundation pit, and assemble two adjacent reinforced concrete prefabricated blocks:

[0031] After removing the elastic rubber plug, align the connection surfaces of the two adjacent reinforced concrete prefabricated blocks. At this time, the male head of one of the reinforced concrete prefabricated blocks is aligned with the female head of the other reinforced concrete prefabricated block, and epoxy resin is coated on the connection surface. Then, the outer reinforced concrete prefabricated block is pushed toward the inner reinforced concrete prefabricated block, so that the male head is pushed into the inside of the socket. In the process of the male head extending into the socket, the female head is squeezed outward, and the reset spring stores energy until the male head extends into the space surrounded by the female head and the socket. Under the action of the restoring force of the reset spring, the female head is reset and the male head is clamped between the female head and the socket.

[0032] S4, repeating step S3 in order from outside to inside, assembling multiple reinforced concrete prefabricated blocks in sequence until the assembly is completed.

[0033] The present invention has the following beneficial effects:

[0034] By adopting a reinforced concrete prefabricated structure with male and female heads, the concrete quality control is achieved under a controllable external environment, thereby effectively avoiding the impact of the external environment on the concrete structure.

[0035] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the assembly of a long and large volume concrete underground structure anti-cracking and anti-seepage structure of the present invention;

[0037] Figure 2 for Figure 1 A in the enlarged view;

[0038] Figure 3 This is a schematic diagram of a long and large volume concrete underground structure anti-cracking and anti-seepage structure of the present invention;

[0039] Figure 4 A three-dimensional diagram of a long and large volume concrete underground structure anti-cracking and anti-seepage structure of the present invention;

[0040] Figure 5 A distribution diagram of radial expansion heads of a long and large volume concrete underground structure anti-cracking and anti-seepage structure of the present invention;

[0041] Figure 6 A schematic diagram of a clamp structure of a long and large volume concrete underground structure anti-cracking and anti-seepage structure of the present invention;

[0042] Figure 7 The present invention is a flow chart of a construction method of a long and large volume concrete underground structure anti-cracking and anti-seepage structure.

[0043] Among them: 1. reinforced concrete prefabricated block; 2. elastic buffer layer; 3. steel bar; 4. conical plug; 5. metal protective sleeve; 6. clamp; 7. outer tube; 8. reset spring; 9. inner tube. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages disclosed in the embodiments of the present invention clearer, the embodiments of the present invention are further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions.

[0045] It should be noted that the terms "include", "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or server comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or devices.

[0046] Like reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] like Figure 1-Figure 6As shown, a long and large volume concrete underground structure anti-cracking and anti-seepage structure includes a reinforced concrete prefabricated block 1 and a male head and a female head arranged on the connection surface of the reinforced concrete prefabricated block 1, the male head includes a conical plug 4 fixedly connected to the steel bar 3 of the reinforced concrete prefabricated block 1, the female head includes a socket opened on the reinforced concrete prefabricated block 1, a plurality of radial expansion heads are evenly arranged in a ring array on the inner wall of the socket, the conical plug 4 extends into the socket through the radial expansion head, and the conical plug 4 is stuck in the space surrounded by the radial expansion head and the socket. Specifically, the radial expansion head includes an inner cylinder 9 fixed on the inner wall of the socket at one end, an outer cylinder 7 and a chuck 6 radially slidably arranged at the other end of the inner cylinder 9, the chuck 6 is connected to the socket via a reset spring 8, and the reset spring 8 is placed inside the inner cylinder 9 and the outer cylinder 7; the chucks 6 of multiple radial expansion heads form an inner conical cylinder structure, the large mouth end of the inner conical cylinder structure faces the direction of the conical plug 4, the minimum inner diameter of the small mouth end of the inner conical cylinder structure is smaller than the bottom diameter of the conical plug 4, and the maximum inner diameter of the small mouth end of the inner conical cylinder structure is larger than the bottom diameter of the conical plug 4, that is, when the reset spring 8 is in the natural state, the diameter of the small mouth end of the inner conical cylinder structure is smaller than the bottom diameter of the conical plug 4, and when the reset spring 8 is in the compression limit state, the diameter of the small mouth end of the inner conical cylinder structure is larger than the bottom diameter of the conical plug 4. In this embodiment, the slope of the inner conical cylinder structure is equal to the slope of the conical plug 4.

[0050] A metal protective sleeve 5 is fixed on the inner wall of the socket, and the metal protective sleeve 5 is welded to the steel bars 3 in the reinforced concrete prefabricated block 1. An inner cylinder 9 is fixed on the inner wall of the metal protective sleeve. An insertion port is provided at one end of the metal protective sleeve 5 facing the conical plug 4, and an elastic rubber plug is provided inside the insertion port to protect the radial telescopic head in the storage state.

[0051] An elastic buffer layer 2 is provided between the metal protective sleeve and the concrete of the reinforced concrete prefabricated block 1, and between the steel bars 3 and the concrete of the reinforced concrete prefabricated block 1, so as to buffer the difference between thermal expansion and contraction of different materials, thereby effectively reducing the cracks caused thereby. The elastic buffer layer 2 is made of polytetrafluoroethylene.

[0052] The reinforced concrete prefabricated block 1 is a structure formed by pouring concrete raw materials into a mold under set temperature conditions. The raw materials include cement, fly ash, coarse aggregate, fine aggregate and additives, among which cement is silicate cement; fly ash is grade I fly ash; coarse aggregate is crushed stone with a particle size of 5-30mm, and the mud content of crushed stone is less than 1%; fine aggregate is medium sand with an average particle size of 0.5mm, the fineness modulus of medium sand is greater than 2.3, and the mud content of medium sand is less than 3%; the additive is a water reducer; the weight ratio of cement, water, fly ash, coarse aggregate, fine aggregate and additive is 1:0.55:0.32:3.54:2.9:0.02. The water consumption of concrete is not more than 170kg / m 3The fly ash content shall not exceed 50% of the cementitious material usage, the water-cement ratio shall not exceed 0.45, and the sand rate shall be 38%-45%.

[0053] The set temperature condition is that the difference between the ambient temperature and the concrete surface temperature and the temperature inside the concrete is less than 5°C.

[0054] like Figure 7 As shown, a construction method of a long and large volume concrete underground structure anti-cracking and anti-seepage structure comprises the following steps:

[0055] S1. Preparation of reinforced concrete prefabricated blocks 1:

[0056] S11. Ratio of concrete raw materials:

[0057] Cement, water, fly ash, coarse aggregate, fine aggregate and additives are weighed respectively according to a weight ratio of 1:0.55:0.32:3.54:2.9:0.02, and put into a mixer truck for mixing to obtain concrete raw materials;

[0058] S12, welding a metal protective sleeve or a male connector with a radial expansion joint to the end of the steel bar 3 at the connection surface;

[0059] S13, wrapping the elastic buffer layer 2 around the outside of the metal protective sleeve and the outside of the steel bar 3, and heat-sealing the joints of the elastic buffer layer 2;

[0060] S14, designing the mold according to the design drawings and determining the position of the connection surface and the spacing and height of the steel bars 3, and arranging the steel bars 3 inside the mold according to the design drawings;

[0061] S15, under the set temperature condition, pour the concrete raw materials that have been proportioned in step S11 into the mold, and after the mold is filled, expel the bubbles under the action of the vibrator;

[0062] S16, curing: after spraying water on the surface of the component obtained in step S15, cover it with a waterproof film, and place it under a set temperature condition for curing for a set time, wherein the set temperature is that the difference between the surface of the component and the ambient temperature is less than 20°C, and the center temperature of the component and the surface temperature are not greater than 25°C, and the set time is not less than 14 days;

[0063] S17. After the curing is completed, the waterproof film is removed from the mold for later use;

[0064] S2, excavation of foundation pit;

[0065] S3, transport the reinforced concrete prefabricated block 1 to the construction site, use the lifting equipment to lift the reinforced concrete prefabricated block 1 into the foundation pit, and assemble two adjacent reinforced concrete prefabricated blocks 1:

[0066] After removing the elastic rubber plug, align the connection surfaces of the two adjacent reinforced concrete prefabricated blocks 1. At this time, the male head of one reinforced concrete prefabricated block 1 is aligned with the female head of the other reinforced concrete prefabricated block 1, and epoxy resin is coated on the connection surface. Then, the outer reinforced concrete prefabricated block 1 is pushed toward the inner reinforced concrete prefabricated block 1, so that the male head is pushed into the inside of the socket. In the process of the male head extending into the socket, the female head is squeezed outward, and the reset spring 8 stores energy until the male head extends into the space surrounded by the female head and the socket. Under the action of the restoring force of the reset spring 8, the female head is reset and the male head is clamped between the female head and the socket;

[0067] S4, repeating step S3 in order from outside to inside, assembling multiple reinforced concrete prefabricated blocks 1 in sequence until the assembly is completed.

[0068] It can be seen that the use of the above-mentioned reinforced concrete prefabricated block structure reduces the requirements for the construction environment, while reducing the construction difficulty and improving the construction efficiency.

[0069] Therefore, the present invention adopts the above-mentioned long and large-volume concrete underground structure anti-cracking and anti-seepage structure and its construction method, and realizes concrete quality control under a controllable external environment by adopting a reinforced concrete prefabricated structure with male and female heads, thereby effectively avoiding the impact of the external environment on the concrete structure.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A long and large volume concrete underground structure with anti-cracking and anti-seepage properties, Features: It includes a reinforced concrete prefabricated block and a male head and a female head arranged on the connection surface of the reinforced concrete prefabricated block. The male head includes a conical plug fixedly connected to the steel bars of the reinforced concrete prefabricated block. The female head includes a socket opened on the reinforced concrete prefabricated block. A plurality of radial expansion heads are evenly arranged in a ring array on the inner wall of the socket. The conical plug extends into the socket through the radial expansion head, and the conical plug is stuck in the space surrounded by the radial expansion head and the socket.

2. The long and large volume concrete underground structure anti-cracking and anti-seepage structure according to claim 1, Features: The radial expansion head comprises an inner cylinder with one end fixed on the inner wall of the socket, an outer cylinder radially slidably arranged at the other end of the inner cylinder and a clamping head, the clamping head and the socket are connected via a return spring, and the return spring is arranged inside the inner cylinder and the outer cylinder; The clamping heads of multiple radial telescopic heads form an inner cone structure, the large end of the inner cone structure faces the direction of the tapered plug, the minimum inner diameter of the small end of the inner cone structure is smaller than the bottom diameter of the tapered plug, and the maximum inner diameter of the small end of the inner cone structure is larger than the bottom diameter of the tapered plug.

3. The long and large volume concrete underground structure anti-cracking and anti-seepage structure according to claim 2, Features: A metal protective sleeve is fixed on the inner wall of the socket, the metal protective sleeve is welded to the steel bars in the reinforced concrete prefabricated block, and an inner cylinder is fixed on the inner wall of the metal protective sleeve.

4. The long and large volume concrete underground structure anti-cracking and anti-seepage structure according to claim 3, Features: An insertion opening is provided at one end of the metal protective sleeve facing the conical plug, and an elastic rubber plug is arranged inside the insertion opening.

5. The long and large volume concrete underground structure anti-cracking and anti-seepage structure according to claim 4, Features: Elastic buffer layers are arranged between the metal protective sleeve and the concrete of the reinforced concrete prefabricated block, and between the steel bars and the concrete of the reinforced concrete prefabricated block.

6. The long and large volume concrete underground structure anti-cracking and anti-seepage structure according to claim 5, Features: The elastic buffer layer is made of polytetrafluoroethylene.

7. The long and large volume concrete underground structure anti-cracking and anti-seepage structure according to claim 6, Features: Reinforced concrete prefabricated blocks are formed by pouring concrete raw materials into a mold under set temperature conditions. The raw materials include cement, fly ash, coarse aggregate, fine aggregate and additives. Among them, cement is silicate cement; fly ash is grade I fly ash; coarse aggregate is crushed stone with a particle size of 5-30mm, and the mud content of the crushed stone is less than 1%; fine aggregate is medium sand with an average particle size of 0.5mm, the fineness modulus of the medium sand is greater than 2.3, and the mud content of the medium sand is less than 3%; the additive is a water reducer; The weight ratio of cement, water, fly ash, coarse aggregate, fine aggregate and additives is 1:0.55:0.32:3.54:2.9:0.

02.

8. The long and large volume concrete underground structure anti-cracking and anti-seepage structure according to claim 7, Features: The water consumption of concrete shall not exceed 170kg / m 3 The fly ash content shall not exceed 50% of the cementitious material usage, the water-cement ratio shall not exceed 0.45, and the sand rate shall be 38%-45%.

9. The long and large volume concrete underground structure anti-cracking and anti-seepage structure according to claim 8, Features: The set temperature condition is that the difference between the ambient temperature and the concrete surface temperature and the temperature inside the concrete is less than 5°C.

10. A construction method for a long and large volume concrete underground structure anti-cracking and anti-seepage structure as described in claim 9, Features: The following steps are involved: S1. Preparation of reinforced concrete prefabricated blocks: S11. Ratio of concrete raw materials: Cement, water, fly ash, coarse aggregate, fine aggregate and additives are weighed respectively according to a weight ratio of 1:0.55:0.32:3.54:2.9:0.02, and put into a mixer truck for mixing to obtain concrete raw materials; S12, welding a metal protective sleeve or male connector with a radial expansion joint to the end of the steel bar at the connection surface; S13, wrapping an elastic buffer layer around the outside of the metal protective sleeve and the outside of the steel bar, and heat-sealing the joints of the elastic buffer layer; S14. Design the mold according to the design drawings and determine the position of the connection surface and the spacing and height of the steel bars, and arrange the steel bars inside the mold according to the design drawings; S15, under the set temperature condition, pour the concrete raw materials that have been proportioned in step S11 into the mold, and after the mold is filled, expel the bubbles under the action of the vibrator; S16, curing: after spraying water on the surface of the component obtained in step S15, cover it with a waterproof film, and place it under a set temperature condition for curing for a set time, wherein the set temperature is that the difference between the surface of the component and the ambient temperature is less than 20°C, and the center temperature of the component and the surface temperature are not greater than 25°C, and the set time is not less than 14 days; S17. After the curing is completed, the waterproof film is removed from the mold for later use; S2, excavation of foundation pit; S3. Transport the reinforced concrete prefabricated blocks to the construction site, use hoisting equipment to hoist the reinforced concrete prefabricated blocks into the foundation pit, and assemble two adjacent reinforced concrete prefabricated blocks: After removing the elastic rubber plug, align the connection surfaces of the two adjacent reinforced concrete prefabricated blocks. At this time, the male head of one of the reinforced concrete prefabricated blocks is aligned with the female head of the other reinforced concrete prefabricated block, and epoxy resin is coated on the connection surface. Then, the outer reinforced concrete prefabricated block is pushed toward the inner reinforced concrete prefabricated block, so that the male head is pushed into the inside of the socket. In the process of the male head extending into the socket, the female head is squeezed outward, and the reset spring stores energy until the male head extends into the space surrounded by the female head and the socket. Under the action of the restoring force of the reset spring, the female head is reset and the male head is clamped between the female head and the socket. S4, repeating step S3 in order from outside to inside, assembling multiple reinforced concrete prefabricated blocks in sequence until the assembly is completed.

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